NASA NTRS · 19810000368
Pivot Attachment for Prefabricated Beams
Abstract
Assembly of prefabricated structural beams for roof trusses, bleachers, or other lightweight structures made easier by use of flexural pivot at one or both ends. When pivot is attached, joint is flexible, thus simplifying alinement; joint is subsequently rigidized by threaded collar that completes attachment.
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Stroll, H. W. J.. 1982-12-01. Pivot Attachment for Prefabricated Beams. https://ntrs.nasa.gov/citations/19810000368
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